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Wear is a common misconception on the internet, so I inferred that is what you are talking about. Not sure what issue you were implying if it was not excessive wear? What possible issues are you implying "with an expensive 308 rifle"? (I'm wanting to use this in a Smith M&P10 eventually, that's why I"m asking)

I've had FTE issues with steel cased ammo after shooting several rounds, resulting in having to use a cleaning rod and small hammer to remove. This was with more than one brand of steel cased. My rifle probably has tight tolerances.